diff --git a/dagger/compiler.go b/dagger/compiler.go
index 1f44e2e0..4aa30856 100644
--- a/dagger/compiler.go
+++ b/dagger/compiler.go
@@ -27,20 +27,19 @@ func (cc *Compiler) Cue() *cue.Runtime {
 	return &(cc.Runtime)
 }
 
-func (cc *Compiler) Spec() (*Spec, error) {
+func (cc *Compiler) Spec() *Spec {
 	if cc.spec != nil {
-		return cc.spec, nil
+		return cc.spec
 	}
 	v, err := cc.Compile("spec.cue", DaggerSpec)
 	if err != nil {
-		return nil, err
+		panic(err)
 	}
-	spec, err := v.Spec()
+	cc.spec, err = v.Spec()
 	if err != nil {
-		return nil, err
+		panic(err)
 	}
-	cc.spec = spec
-	return spec, nil
+	return cc.spec
 }
 
 // Compile an empty struct
diff --git a/dagger/value.go b/dagger/value.go
index a7ef7501..623ce007 100644
--- a/dagger/value.go
+++ b/dagger/value.go
@@ -242,10 +242,7 @@ func (v *Value) Validate(defs ...string) error {
 	if len(defs) == 0 {
 		return nil
 	}
-	spec, err := v.Compiler().Spec()
-	if err != nil {
-		return err
-	}
+	spec := v.Compiler().Spec()
 	for _, def := range defs {
 		if err := spec.Validate(v, def); err != nil {
 			return err
@@ -324,11 +321,8 @@ func (v *Value) ScriptOrComponent() (interface{}, error) {
 
 func (v *Value) Op() (*Op, error) {
 	// Merge #Op definition from spec to get default values
-	spec, err := v.Compiler().Spec()
-	if err != nil {
-		return nil, err
-	}
-	v, err = spec.Get("#Op").Merge(v)
+	spec := v.Compiler().Spec()
+	v, err := spec.Get("#Op").Merge(v)
 	if err != nil {
 		return nil, err
 	}